Authorities said Frazier was found dead in his mother's auto Thursday, hours after the vehicle was stolen from outside a Jackson supermarket with the child inside.
Madison County District Attorney Michael Guest announced at a news conference that authorities plan to charge McBride, Dwan Wakefield, and Tyreek Washington, in the death of 6-year old Kingston Frazier. Prosecutors plan on pursuing the death penalty for McBride.
According to an investigator's statement obtained by The Associated Press, Wakefield told police that McBride stole the vehicle and killed Frazier.
Kingston was found dead later Thursday morning in rural Madison County when a passerby noticed the vehicle abandoned on the side of the road and recognized it from the Amber Alert.
"I think there is a great desire to see justice is served in this case", Guest said outside of the courthouse. McBride had a prior commercial burglary charged while Wakefield, who is also a high school student has no previous criminal record. Family members of McBride and Wakefield asserted their innocence Monday to reporters after the hearing.
The courtroom was filled with family members of the victim and suspects.
The judge said each defendant posed a danger to the community and decided against allowing bail.
"She's struggling", Amos Archie said.
Kingston was set to graduate from kindergarten Thursday, the day he was kidnapped and ultimately killed.
About 9:30 a.m. Thursday, Kingston's body was discovered on a dead-end road in Madison County, roughly 15 miles away from the store.
"I'd put my life on it that he's innocent", Roby said.
None of the three entered a plea Monday, and they are scheduled for a June 26 preliminary hearing.